Pure polyurethane condom having adhesive layer and preparation method therefor
AssigneeReckitt Benckiser Health Limited
InventorsJiabing DAI, Weihu LI, Linlin FENG, Liang CHEN
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Abstract
Disclosed are a polyurethane condom (100) with an adhesive layer (20) and a preparation method therefor. The polyurethane condom (100) with the adhesive layer (20) comprises a first polyurethane film layer (10), the adhesive layer (20) on the first polyurethane film layer (10), and a second film layer (30) on the adhesive layer (20), wherein the adhesive layer (20) includes 0 to 100% by weight of a polar component, 0 to 100% by weight of a non-polar component, and 0 to 100% by weight of a material composed of a polar and non-polar hybrid component, and has a thickness of 0.1 to 30 μm.
Claims20
A polyurethane condom having an adhesive layer, comprising:
- a first polyurethane film layer;
- an adhesive layer on the first polyurethane film layer;
- and
- a second film layer on the adhesive layer,
- wherein the adhesive layer includes 0 to 100% by weight of a polar component, 0 to 100% by weight of a non-polar component, and 0 to 100% by weight of a material composed of a polar and non-polar hybrid component, and has a thickness of 0.1 to 30 μm.
A polyurethane condom having an adhesive layer, comprising:
- a first polyurethane film layer;
- a first adhesive layer on the first polyurethane film layer;
- a second film layer on the adhesive layer;
- a second adhesive layer on the second film layer, the second adhesive layer having the same structure as that of the first adhesive layer;
- and
- a third polyurethane film layer on the second film layer, the third polyurethane film layer having the same structure as that of the first polyurethane film layer,
- wherein the first adhesive layer includes 0 to 100% by weight of a polar component, 0 to 100% by weight of a non-polar component, and 0 to 100% by weight of a material composed of polar and non-polar hybrid component, and has a thickness of 0.1-30 μm;
- wherein the first adhesive layer has a 100% tensile modulus of 2.5 N/mm2 or lower;
- wherein the second film layer includes a natural rubber or a polyisoprene resin;
- and
- wherein the polyurethane condom has a thickness of 0.010-0.080 mm.
A method for preparing a polyurethane condom having an adhesive layer, comprising the steps of:
- dipping in a polyurethane resin and drying, to form a first polyurethane film layer;
- dipping in an adhesive layer material and drying, to form an adhesive layer on the first polyurethane film layer;
- dipping in a second film layer material and drying, to form a second film layer on the adhesive layer;
- dipping in a release agent to apply the release agent on the second film layer, followed by drying, demolding, and electrical testing to obtain the polyurethane condom having an adhesive layer;
- wherein the adhesive layer includes 0 to 100% by weight of a polar component, 0 to 100% by weight of a non-polar component, and 0 to 100% by weight of a material composed of polar and non-polar hybrid component, and has a thickness of 0.1-30 μm.
Dependencies are inferred from the claim text.